<template>
  <div>
    <audio @timeupdate="updateProgress" controls ref="audioRef" style="display: none" :src="fileurl" >
      <source  type="audio/mpeg" />
      您的浏览器不支持音频播放
    </audio>
    <div class="audio-right">
      <i :class="audioStatus !== 'pause' ? 'iconfont icon-bofang' : 'iconfont icon-zanting'" @click="playAudio" class="dialogAudioPlay"></i>
      <span class="audio-length-current" id="audioCurTime">{{ audioStart }}</span
        >
      <div class="progress-bar-bg" id="progressBarBg" v-dragto="setAudioIcon">
        <div class="progress-bar" id="progressBar">
          <div class="circle"></div>
        </div>
      </div>
      <div class="audio-time" style="min-height: 10px">
        <span class="audio-length-total">{{ duration }}</span>
      </div>
      <div class="volume">
        <div
          @click.stop="
            () => {
              return false
            }
          "
          class="volume-progress"
          v-show="audioHuds"
        >
          <div class="volume-bar-bg" id="volumeBarBg" v-adjuster="handleShowMuteIcon">
            <div class="volume-bar" id="volumeBar"></div>
          </div>
        </div>
        <i class="iconfont pl-1" :class="audioIcon" @click.stop="audioHuds = !audioHuds"> </i>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  props: {
    fileurl: {
      trpe: String
    }
  },
  data() {
    return {
      audioStatus: 'play',
      audioStart: '0:00',
      duration: '--',
      audioVolume: 0.5,
      audioHuds: false
    };
  },

  directives: {
    dragto: {
      inserted: function (el, binding, vnode) {
        el.addEventListener(
          'click',
          (e) => {
            let wdiv = document.getElementById('progressBarBg').clientWidth;
            let audio = vnode.context.$refs.audioRef;
            // 只有音乐开始播放后才可以调节，已经播放过但暂停了的也可以
            let ratemin = e.offsetX / wdiv;
            let rate = ratemin * 100;
            document.getElementById('progressBar').style.width = rate + '%';
            audio.currentTime = audio.duration * ratemin;
            audio.play();
            binding.value();
          },
          false
        );
      }
    },
    adjuster: {
      inserted: function (el, binding, vnode) {
        el.addEventListener(
          'click',
          (e) => {
            let hdiv = document.getElementById('volumeBarBg').clientHeight;
            let audio = vnode.context.$refs.audioRef;
            // 只有音乐开始播放后才可以调节，已经播放过但暂停了的也可以
            let ratemin = e.offsetY / hdiv;
            let rate = ratemin * 100;
            document.getElementById('volumeBar').style.height = rate + '%';
            audio.volume = ratemin;
            binding.value(rate / 100);
          },
          false
        );
      }
    }
  },
  computed: {
    audioIcon() {
      if (this.audioHuds) {
        return this.audioVolume < 0.01 ? 'checked icon-jingyin' : 'checked icon-shengyin';
      } else {
        return 'icon-shengyin';
      }
    }
  },
  mounted() {
    this.fetch();
  },
  methods: {
    fetch() {
      let that = this;
      var myVid = this.$refs.audioRef;
      myVid.loop = false;
      // 监听音频播放完毕
      myVid.addEventListener(
        'ended',
        function () {
          that.audioStatus = 'play'; // 显示播放icon
          document.getElementById('progressBar').style.width = '0%'; // 进度条初始化
        },
        false
      );
      if (myVid != null) {
        myVid.oncanplay = function () {
          that.duration = that.transTime(myVid.duration); // 计算音频时长
        };
        myVid.volume = 0.5; // 设置音量50%
      }
    },
    // 播放暂停控制
    playAudio() {
      let recordAudio = this.$refs.audioRef; // 获取audio元素
      if (recordAudio.paused) {
        recordAudio.play();
        this.audioStatus = 'pause';
      } else {
        recordAudio.pause();
        this.audioStatus = 'play';
      }
    },
    // 更新进度条与当前播放时间
    updateProgress(e) {
      var value = e.target.currentTime / e.target.duration;
      if (document.getElementById('progressBar')) {
        document.getElementById('progressBar').style.width = value * 100 + '%';
        if (e.target.currentTime === e.target.duration) {
          this.audioStatus = 'pause';
        }
      } else {
        this.audioStatus = 'pause';
      }

      this.audioStart = this.transTime(this.$refs.audioRef.currentTime);
    },
    /**
     * 音频播放时间换算
     * @param {number} value - 音频当前播放时间，单位秒
     */
    transTime(time) {
      var duration = parseInt(time);
      var minute = parseInt(duration / 60);
      var sec = (duration % 60) + '';
      var isM0 = ':';
      if (minute === 0) {
        minute = '00';
      } else if (minute < 10) {
        minute = '0' + minute;
      }
      if (sec.length === 1) {
        sec = '0' + sec;
      }
      return minute + isM0 + sec;
    },
    setAudioIcon() {
      this.audioStatus = 'pause';
    },
    handleShowMuteIcon(val) {
      this.audioVolume = val;
    },
  },
  watch:{
    fileurl(newVal,Val){
      const that = this;
      if(!Val){
        return;
      }
      this.audioStatus = 'play';
      setTimeout(() => {
        that.playAudio();
      },100);

    },
  },

};
</script>

<style lang="scss" rel='stylesheet/scss'  scoped>
.volume {
  position: relative;
  .volume-progress {
    position: absolute;
    top: -150px;
    width: 32px;
    height: 140px;
    background: #f6f6f6;
    border-radius: 4px;
    padding-top: 10px;
  }
  .volume-bar-bg {
    margin: 0 auto;
    width: 6px;
    height: 120px;
    background: #dcdcdc;
    border-radius: 100px;
    flex: 1;
    position: relative;
    transform: rotate(180deg);
    cursor: pointer;
    .volume-bar {
      width: 6px;
      height: 50%;
      background: #56bf8b;
      border-radius: 100px;
    }
  }
  .checked {
    color: #56bf8b;
  }
}
.audio-right {
  width: 100%;
  height: 49px;
  line-height: 49px;
  // background: #f6f6f6;
  border-radius: 6px;
  display: flex;
  padding: 0 15px;
  .dialogAudioPlay {
    cursor: pointer;
    color: var(--themeBaseColor);
    font-size: 28px;
    margin-right: 9px;
  }
  .progress-bar-bg {
    background-color: #F0F0F1;
    flex: 1;
    position: relative;
    height: 3px;
    top: 50%;
    transform: translateY(-50%);
    margin-top: -1px;
    cursor: pointer;
    margin: 0 10px;
  }
  .progress-bar {
    background-color: var(--themeBaseColor);
    width: 0%;
    height: 3px;
    border-radius: 5px;
    position: relative;
    .circle{
      width: 12px;
      height: 12px;
      border-radius: 100%;
      background-color: var(--themeBaseColor);
      position: absolute;
      bottom: -4px;
      right: 0px;
    }
  }

  .audio-time {
    overflow: hidden;
    font-size: 14px;
    .audio-length-total {
      float: right;
    }
  }
    .audio-length-current {
      float: left;
      margin-right: 8px;
    }
}
</style>

